A2 Stainless Steel Large Diameter Flat Washers – 3× and 4× Hole Diameter, 3–16 mm

ID 1401828

$ 52.94

1-2 weeks delivery time

Size:

10x30
10x40
12x36
12x48
14x42
16x48
3x12
3x9
4x12
4x16
5x15
5x20
8x24
8x32
6x18
6x24

A2 stainless steel large diameter flat washers are available in 16 sizes, with nominal inner diameters from 3 to 16 mm and outer diameters from 9 to 48 mm. The range includes washers with an outer diameter three times (3× series) or four times (4× series) the nominal hole diameter. These corrosion-resistant flat washers provide an enlarged bearing surface to distribute fastening loads around bolts and other threaded fasteners. Available dimensions include 3×9, 3×12, 4×12, 4×16, 5×15, 5×20, 6×18, 6×24, 8×24, 8×32, 10×30, 10×40, 12×36, 12×48, 14×42 and 16×48 mm.

Description
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A2 Stainless Steel Large Diameter Flat Washers – 3× and 4× Hole Diameter, 3–16 mm

These large diameter flat washers are manufactured from A2 stainless steel and designed to distribute fastening loads over a wider surface around bolts and other threaded fasteners. The range includes washers with an outer diameter three or four times the nominal hole diameter, offering different bearing surface sizes for fastening and assembly applications.

The washers are available in 16 dimensional configurations, with nominal inner diameters from 3 to 16 mm and outer diameters from 9 to 48 mm. The 3× series provides an outer diameter three times the nominal hole diameter, while the 4× series offers a wider profile with an outer diameter four times the nominal hole diameter. All dimensions are expressed as nominal inner diameter × outer diameter in millimetres.

According to the supplied FNI product descriptions, the washers are listed with DIN 9021 as their catalogue standard. Both dimensional series are included in this product range.

Technical Specifications

Product Type	Large Diameter Flat Washer
Material	A2 Stainless Steel
Catalogue Standard	DIN 9021 (as specified in the supplied product descriptions)
Diameter Series	3× and 4× nominal hole diameter
Nominal Inner Diameters	3, 4, 5, 6, 8, 10, 12, 14, 16 mm
Outer Diameter Range	9–48 mm
Available Variants	16
Dimensions Format	Nominal inner diameter × outer diameter

Features and Applications

A2 stainless steel construction provides corrosion resistance.
Flat washer design for fastening and assembly applications.
Available with outer diameters three or four times the nominal hole diameter.
Enlarged bearing surface helps distribute fastening loads.
Choice of outer diameters for selected nominal hole sizes.
Suitable for general mechanical and industrial fastening applications.
Available in 16 dimensional configurations.

Available Sizes and Part Numbers

Inner Diameter	Outer Diameter	Diameter Ratio	FNI Part No.
10 mm	30 mm	3×	Y10X30
10 mm	40 mm	4×	Y10X40
12 mm	36 mm	3×	Y12X36
12 mm	48 mm	4×	Y12X48
14 mm	42 mm	3×	Y14X42
16 mm	48 mm	3×	Y16X48
3 mm	12 mm	4×	Y3X12
3 mm	9 mm	3×	Y3X9
4 mm	12 mm	3×	Y4X12
4 mm	16 mm	4×	Y4X16
5 mm	15 mm	3×	Y5X15
5 mm	20 mm	4×	Y5X20
6 mm	18 mm	3×	Y6X18
6 mm	24 mm	4×	Y6X24
8 mm	24 mm	3×	Y8X24
8 mm	32 mm	4×	Y8X32

Size Selection

Select the washer according to the required nominal inner diameter and outer diameter. Where both 3× and 4× versions are available for the same nominal hole size, the 4× washer provides a wider bearing surface.